Porsche 911 Carrera - Manual (Page 123)

Push operating lever forward. Push operating lever forward. The time runs
on all stopwatch displays. The on-board
computer display changes to the “Stop
timing/Intermediate time” selection.
Note
PCM: The performance display in the “Trip/Sport
display/Begin trip” menu must be selected in order
to analyse the data in the PCM.
Controls, Instruments
121